<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card class="el-card_echar">
           <!-- 为echarts 准备一个具备大小(宽度)的 Dom -->
           <div id="main" style="width:1000px;height: 400px;"></div>
        </el-card>
    </div>
</template>

<script>

// 1.导入echars
import echarts from 'echarts'
import _ from 'lodash'

export default {
  data () {
    return {
    // 需要合并的数据
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created () {},
  async mounted () {
    // 3. 基于准备好的dom,初始化echarts实例
    var myChar = echarts.init(document.getElementById('main'))

    const { data: res } = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) {
      return this.$message.error('获取折线图失败!')
    }
    console.log(res.data)
    console.log(this.options)

    // 4.准备数据和配置项 测试数据
    // var option = {
    //   title: { text: 'ECharts 入门示例' },
    //   tooltip: {},
    //   legend: { data: ['销量'] },
    //   xAxis: {
    //     data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
    //   },
    //   yAxis: {},
    //   series: [{
    //     name: '销量',
    //     type: 'bar',
    //     data: [5, 20, 36, 10, 10, 20]
    //   }]
    // }
    const result = _.merge(res.data, this.options)

    // 5. 展示数据
    myChar.setOption(result)
  },
  methods: {}
}
</script>

<style lang="less" scoped>
.el-card_echar {
    padding: 100px;
}
</style>
